package com.sky.service.impl;

import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.OrderReportVO;
import com.sky.vo.SalesTop10ReportVO;
import com.sky.vo.TurnoverReportVO;
import com.sky.vo.UserReportVO;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/***
 *@title ReportServiceImpl
 *@description <TODO description class purpose>
 *@author lzy33
 *@version 1.0.0
 *@create 24/1/2025 下午 4:35
 **/

@Service
public class ReportServiceImpl implements ReportService {

        @Autowired
        private OrderMapper orderMapper;

        @Autowired
        private UserMapper userMapper;

        @Autowired
        private WorkspaceService workspaceService;

    /**
     * 根据时间区间统计营业额
     * @param begin
     * @param end
     * @return
     */
    @Override
    public TurnoverReportVO getTurnover(LocalDate begin, LocalDate end) {
            List<LocalDate> dateList = new ArrayList<>();

            dateList.add(begin);

            while(!begin.equals(end)){
                begin = begin.plusDays(1);//日期计算，获得指定日期后1天的日期
                dateList.add(begin);
            }

            //存放每天的营业额
            List<Double> turnoverList  = new ArrayList<>();
            for(LocalDate date: dateList){
                //从当天的开始时间持续到结束的时间
                LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
                LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
                Map map = new HashMap();
                map.put("status", Orders.COMPLETED);
                map.put("begin",beginTime);
                map.put("end",endTime);

                //根据动态条件统计营业额
                Double turnover = orderMapper.sumByMap(map);
                turnover = turnover == null ? 0.0:turnover;
                turnoverList.add(turnover);
            }
            //数据封装

            return TurnoverReportVO.builder()
                    .dateList(org.apache.commons.lang3.StringUtils.join(dateList,","))
                    .turnoverList(org.apache.commons.lang3.StringUtils.join(turnoverList,","))
                    .build();
    }

    /**
     * 根据时间区间统计用户数量
     * @param begin
     * @param end
     * @return
     */
    @Override
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        ArrayList<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);

        while(!begin.equals(end)){
            begin = begin.plusDays(1);//日期计算，获得指定日期后1天的日期
            dateList.add(begin);
        }
        ArrayList<Integer>newUserList =  new ArrayList<>();
        ArrayList<Integer>totalUserList =  new ArrayList<>();

        dateList.forEach(date -> {
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);

            Integer newUser = getUserCount(beginTime,endTime);
            Integer totalUser = getUserCount(null,endTime);

            newUserList.add(newUser);
            totalUserList.add(totalUser);
        });
        return UserReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .newUserList(StringUtils.join(newUserList,","))
                .totalUserList(StringUtils.join(totalUserList))
                .build();
    }

    /**
     * 根据时间区间订单数量统计
     * @param begin
     * @param end
     * @return
     */
    @Override
    public OrderReportVO getOrderStatistics(LocalDate begin, LocalDate end) {
        ArrayList<LocalDate>dateList = new ArrayList<>();
        dateList.add(begin);

        while(!begin.equals(end)){
            begin = begin.plusDays(1);//日期计算，获得指定日期后1天的日期
            dateList.add(begin);
        }
        //每天订单总数集合
        ArrayList<Integer>orderCountList = new ArrayList<>();

        //媒体有效订单数集合
        ArrayList<Integer>validOrderCountList = new ArrayList<>();

        dateList.forEach(date->{
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);

            //查询每天总数
            Integer orderCount = getOrderCount(beginTime,endTime,null);


            //查询每天有效订单数
            Integer validOrderCount = getOrderCount(beginTime,endTime,Orders.COMPLETED);

            orderCountList.add(orderCount);
            validOrderCountList.add(validOrderCount);
        });
        //时间区间内的总订单数
        Integer totalOrderCount = orderCountList.stream().reduce(Integer::sum).get();

        //区间时间内有效订单数
        Integer validOrderCount = validOrderCountList.stream().reduce(Integer::sum).get();


        //订单完成率
        Double orderCompletionRate = 0.0;
        if(totalOrderCount != 0){
            orderCompletionRate  = validOrderCount.doubleValue() / totalOrderCount;
        }

        return  OrderReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .orderCountList(StringUtils.join(orderCountList,","))
                .validOrderCountList(StringUtils.join(validOrderCountList,","))
                .totalOrderCount(totalOrderCount)
                .validOrderCount(validOrderCount)
                .orderCompletionRate(orderCompletionRate)
                .build();
    }

    /**
     * 查询指定时间区间内的销量排名top10
     * @param begin
     * @param end
     * @return
     */
    @Override
    public SalesTop10ReportVO getSalesTop10(LocalDate begin, LocalDate end) {
        LocalDateTime beginTime = LocalDateTime.of(begin,LocalTime.MIN);
        LocalDateTime endTime = LocalDateTime.of(begin,LocalTime.MAX);

        List<GoodsSalesDTO>goodsSalesDTOList = orderMapper.getSalesTop10(begin,end);

        String nameList = StringUtils.join(goodsSalesDTOList.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList()), ",");
        String numbetList = StringUtils.join(goodsSalesDTOList.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList()), ",");
        return SalesTop10ReportVO.builder().nameList(nameList).numberList(numbetList).build();
    }


    /**
     * 根据时间区间统计指定状态的订单数量
     * @param beginTime
     * @param endTime
     * @param status
     * @return
     */
    private Integer getOrderCount(LocalDateTime beginTime, LocalDateTime endTime, Integer status) {
        Map map = new HashMap();
        map.put("status",status);
        map.put("begin",beginTime);
        map.put("end",endTime);
        return orderMapper.countByMap(map);
    }


    /**
     * 根据时间区间用户数量统计
     * @param beginTime
     * @param endTime
     * @return
     */
    private  Integer getUserCount(LocalDateTime beginTime,LocalDateTime endTime){
        Map map = new HashMap();
        map.put("begin",beginTime);
        map.put("end",endTime);
        return userMapper.countByMap(map);
    }

}
